welcome to the site.
Good for you on saving your Dad's old vicky. By all means have fun with it and keep it going, you Old man would be proud.
If your Dad was real savvy he might have machined that 292 for a 312 crank. Check that first-you might be golden. A 312 crank often has a DOT on the crank flange. See Mummert's site.
If it doesn't have it you might consider that route to make it a stroker. Lot's o fun.
JMHO but I wouldn't put much interest in a forged crank for what you have there with a street car. It will do everything you need. The rods might be a different issue. Have to visit the machinist and get their advice.
If you snoop around here you'll find lots of build ups with great advice as to how to get it back on the road in fine shape.
On the marine engine (I've heard) you need to be cautious of internal rust depending on where it spent its life. But on the other hand they can be generally very low hours and ran in clean air versus "down a dirt road"
A L A N F R A K E S ~ Tulsa, OK